/*
 * Copyright (c) 2009-2011, okazoh_tk. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  - Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  - Neither the name of the copyright holder nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "alkes/media/MemoryImageBuffer.h"

namespace alkes {

MemoryImageBuffer::MemoryImageBuffer(const ImageBufferCaps& caps, int32_t pitch, bool write_only)
: ImageBuffer(write_only)
, pitch_(pitch)
, caps_(caps)
{
}

bool MemoryImageBuffer::validate(const ImageBufferCaps& caps, int32_t pitch)
{
    if (   pitch <= 0
        || 0 == caps.image_width
        || 0 == caps.image_height
        || caps.buf_width < caps.image_width
        || caps.buf_height < caps.image_height
        || AL_PIXEL_FORMAT_UNKNOWN == caps.format)
        return false;

    return alkes_get_bytelength(caps.format, caps.buf_width) <= pitch;
}

void MemoryImageBuffer::getSize(uint16_t& width, uint16_t& height) const
{
    width = caps_.buf_width;
    height = caps_.buf_height;
}

void MemoryImageBuffer::getImageSize(uint16_t& width, uint16_t& height) const
{
    width = caps_.image_width;
    height = caps_.image_height;
}

PixelFormat MemoryImageBuffer::getPixelFormat() const
{
    return caps_.format;
}

int32_t MemoryImageBuffer::getPitch() const
{
    return pitch_;
}

bool MemoryImageBuffer::onResizeImageSize(uint16_t new_width, uint16_t new_height)
{
    caps_.image_width = new_width;
    caps_.image_height = new_height;
    return true;
}

}
